硅酸盐通报2024，Vol.43Issue(6)：2039-2046,8.
磁化水对海工混凝土力学性能和耐久性能的影响
Effect of Magnetized Water on Mechanical Properties and Durability of Marine Concrete
摘要
Abstract
In order to deal with the problem that the marine concrete with large dosage of mineral admixture in the actual project faces the harsh marine environment prematurely and is easy to be eroded by chlorine salt,this paper proposed to use magnetized water instead of tap water to prepare marine concrete,studied the influence law of magnetized water on the mechanical properties and durability of marine concrete at different ages,and analyzed the microstructure of marine concrete using the mercury instrusion porosimetry and scanning electron microscope.The study shows that magnetized water improves the workability of marine concrete.Compared with tap water,magnetized water has obvious improvement on the early mechanical properties of marine concrete,in which the compressive strength and splitting tensile strength of C50 marine concrete with a curing age of 7 d increase by 17.9％and 16.5％,respectively.Regardless of different curing ages,the resistance to carbonation and chloride ion penetration of magnetized water marine concrete are better than tap water marine concrete.The degree of reaction of cementitious materials in magnetized water marine concrete is higher,with fewer cracks,and the microstructure between cementitious materials and aggregates is more compact.The overall porosity is lower,with more harmless pores and fewer harmful pores,leading to a denser microstructure.Thus the mechanical properties and durability of marine concrete are improved.关键词
磁化水/海工混凝土/力学性能/耐久性能/孔结构/微观形貌Key words
magnetized water/marine concrete/mechanical property/durability/pore structure/microstructure分类
建筑与水利引用本文复制引用
郑彪,李顺凯,李育林,粟友良,林奕安..磁化水对海工混凝土力学性能和耐久性能的影响[J].硅酸盐通报,2024,43(6):2039-2046,8.基金项目
广西重点研发计划(2021AB22176) （2021AB22176）
